Building-block.



Patented Apr. 23, 1912.

IVITNESSES:

ATTORNEY.

courses for plain walls.

STATES PATENT UFFIE ALFRED S. NASH, 0F WELIMANSETT, MASSACHUSETTS.

BUILDING-BLOCK.

Specification of Letters Patent.

To all whom it may concern:

vBe it known that I, ALFRED S. NASH, a citizen of the United States ofAmerica, and resident of VVillimansett, in Chicopee, in the county ofHampden and State of Massachusetts,'have invented certain new and usefulImprovements in Building-Blocks, of which the following is a full,clear, and exact description.

This invention relates to improvements in building blocks and moreespecially those composed of concrete, the object being to provide ablock of superior character for building purposes, especially in respectof means for the interlocking and binding of the blocks and to the-meansfor acquiring air circulation through a wall composed of the improvedblocks.

The invention is described in conjunction with the accompanying drawingsand is set forth in the claim.

In the drawings :-Figure 1 is a perspective View of a block made inaccordance with my invention and understood as a stock block, to berepetitively usedin long Fig. 2 is a plan View of a portion of a wall inwhich blocks of my improved construction are employed. Fig. 3 is a frontview of a portion of a wall made of these blocks. 7 Fig. 4 is. avertical sectional view on line H, Fig.3.

Similar characters of reference indicate corresponding parts in all ofthe views.

In the drawings A represents a building. block of what may be hereinconsidered and termed a stock block for repetitive use in long coursesas the uninterrupted character of a wall to be built may permit,theseblocks being composed of concrete or any substance or combination of-materials or substances for the production of an artificial stone. Itwill be herein understood that a indicates the front'or outer face ofthe block and b the inner face. In the relation represented in thedrawing, the block has at its one end a. succession of step shaped facesd which have their recedence from the rear toward the forward side ofthe block, while the same block has atits other end a succession of stepshaped faces which have their recedence from the front toward therearward side of the block. The block has a longitudinal channel g in ahorizontal side thereof, here the top side, and it is also made withpassages h h from top to bottom therethrough which preferably, thoughnot necessarily, are in lines intersecting the front and rear margin ofthe channel 9.

The blocks A and A are special blocks to be employed in places in thebuilding where openings for windows or doors are to be formed, but theypartake in some extent of the structural characteristics of the stockblock A. That is, for instance, the right hand end of the special blockA is made with a step shaped face like the right hand end of the stockblock A, such face being non-complementary to the adjoining left handend face of the block A so that vertical apertures 2', j and 7c areproduced, certain thereof beingeutilized for receiving an interlockingbody of cement or while others serve as vertical air ducts through thestructure at the adjoined ends of two of the blocks; and the left handend of the special block A ismade with a step shaped face which is likethat of the left hand of the stock block A, such face beingnon-complementary to the adjoining right hand end face of the said blockA so that here also the vertical apertures 2', j and k are produced, theone 2' receiving a cement binder therein, while the other two serve asvertical ducts through the structure at the adjoined ends of two of theblocks. Itis to be furthermore stated that the vertical ducts j and 70,either or both, are in communication with the ends of a horizontallongitudinally extending channel 9 in the top side of the block A.reason of the channel, passages h h and the ducts at the adjoined endsof the blocks, free circulation of air is permitted throughout theentire wall structure. And it will be noted on reference to the drawingsthat certain of the vertical passages h h, which are transverselyelongated so that the longer dimensions thereof range with the length ofthe block, have their locations within a. front portion of the thicknessof the-block and their elongated dimensions are such as to extend onlyfor a portion of the length of the block, while other of the verticalpassages it have their locations within a rear portion of the thicknessof the block, which locations, furthermore, are along other portions ofthe length of the block than those occupied by the vertical passages 72.toward the farther side of the block therefrom; and thus it will be seenthat the block-constituted wall in respect. to any portion thereof,whether between vertical joints, or coincident with the verticalPatented Apr.23, 1912.- Application filed February 1, 1911. Serial No.606,033.

joints is one having frost intercepting spaces present therein inanytransversely penetrating line. And for the entrance of air into thecirculatory system, some one block, such as the one a is made withitsvertical passage 11, which communicates with the channel 9 in the topthereof with a right'angular continuation g which opens horizontally toavertical face of the block;

rality of step shaped faces having their recedence from the rear towardthe forward side of the block and having at its other end a plurality ofstep shaped faces which have -their recedence from the front toward therearward side of the block, cooperative blocks, the ends of which are tobe adjoined to those of the above named block, having a plurality ofstep shaped faces which are front and rear surfaces thereof, and abinder of cement in one of the spaces bespaces being left vacant to formvertical air ducts. 7 a

Signed by' me at Springfield, Mass, in presence of two subscribingwitnesses.

- ALFRED S. NASH.

Witnesses:

WM. S. BnLLows, G. R. DRISOOLL.

non-complemental to the faces of the firstnamed block whereby thestructure has at the junctions of the blocks a plurality of verticalspaces therein in lines between the tween each pair of the blocks, otherof such

